In particular, there's going to be a charity prize drawing, with an impressive list of prizes (see prizelist), an auction of all 14 of Adam Baldwin's Firefly scripts (signed, of course -- see this), and Simon's doctor costume from the escape from the medical facility in Serenity (see here) will be auctioned for Equality Now. Wow. So much stuff...

Why did you choose MC-LEF for this fundraiser?Adam Baldwin offered his shooting scripts for the California Browncoats to auction and requested that all proceeds go to MC-LEF. We felt that we could do the most good for MC-LEF by combining the script auctions with our annual Comic-Con fundraiser.

I don't know what exactly the connection between Adam Baldwin and that particular charity is though. Hope that helped! :)

Oops, sorry about the lack of the period at the end, zeitgeist. It's one of(?) my first Whedonesque posts, so didn't realise that's how it would come out. :) Thanks for fixing that and for link-ifying the URLs. Also, what James said. I'm not one of the organizers of the Comic-Con/charity stuff.